Clamping pin device for smoothing and tightening fabrics for cutting goods for clothing



Aug. 30, 19380 A, CLAMPING PIN DEVICE FOR SMOOTHING AND TIGHTENINGFABRICS FOR CUTTING GOODS FOR CLOTHIN Filed Sept. 22, 1957 INVENTORfirmer/e 0 Pia-la ATTORNEY Patented Aug. 30, 1938 PATEL T or ice GLAMPING PIN DEVICE FOR SMOOTHING AND TIGHTENING FABRICS FOR CUTTING GOODS FORCLOTHING Armando Prati, Brooklyn, N. Y. Application September 22, 1937,Serial No. 165,157

Claims.

This invention relates to new and useful improvements in a clamping pindevice for smoothing and tightening fabrics for cutting goods forclothing.

5 The invention has for an object the construction of a device asmentioned which is characterized by a table upon which a roll of fabricmay be placed, a'pin support member beneath said table having projectingpins extending through apertures in said table to the top thereof andadapted to hold the end of said roll of fabric.

It is proposed that anotherportion of the roll of fabric be held down bythe use of tacks. The area between these held portions is held tight andis used for cutting out the patterns of garments.

Still further the invention contemplates the provision of a means forholding said pin support member in various vertical positions so that itis possible to control the extent to which the pins project from the topof the table.

Still further the invention proposes the provision of a clamp strip withslots for the projecting pins movably supported on the top of said tableto clamp down on the table and over the pins.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the append- V ed claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:-

Fig. l is a fragmentary plan View of a table with a clamping pin deviceconstructed according to this invention.

Fig. 2 is an elevational View of the device shown in Fig. 1.

Fig. 3 is an end viewtaken on the line 33 of Fig. 1.

Fig. 4 is a horizontal sectional view taken on the line 44 of Fig. 3.

Fig. 5 is a fragmentary enlarged sectional view taken on the line 55 ofFig. 3.

Fig. 6 is a fragmentary plan view looking in the direction of the line6-6 of Fig. 5.

Fig. '7 is a sectional view similar to Fig. 5 but illustrating a.modification of the invention.

The clamping device, according to this inven- 50 tion, is used inconjunction with a table If) adapted to receive a roll of fabric I l,the end portion of which is extended over the table. A'pin supportmember I2 is arranged beneath the table and is provided with a pluralityof projecting pins 13 extending through apertures M in the table to thetop thereof. The free end of the fabric I l is engaged on the projectingpins l3 so that it is held firmly. The fabric is secured by a line oftransverse tacks H5. The area between the tacks l5 and the pins l3 isused for cutting out pat- 5 terns of garments and the like.

A means is provided for holding the pin support member l2 invariousvertical positions and includes a pair of follower bushings Il mountedon the side of the pin support member l2 and threadedly engaged byscrews l8. These screws l8 are rotatively supported at their upper endsl8 and extend downwards. These screws are connected for unitaryrotation. Each screw I8 is provided with a gear l9, and these gears areconnected together by a chain 20. One of the gears 89 has a handle 2!associated with one side thereof by which it may be turned.

The screws l8 are provided with stop pins E3 to limit the lower motionsof pins i3. 201

.A means is provided for rotatively holding the lower ends of the screwsl 8. This means includes rigid straps 22 and 23 mounted upon theunderside of the table top and connected with bearings 24 coaxially ofthe gears and rotatively supporting the screws l8. Rotations transmittedto the screws 18, cause the follower bushing l! to move upwards ordownwards and so lift or lower the pin support member l2.

The table l0 comprises a main portion lfl upon which the roll of fabricis positioned. At one side the table has an extension portion lll It isthis extension portion which is provided with and supports the screwsl8. The extension portion W is secured upon the edge of the tableportion lfi by the use of fastening elements 26 (see Fig. 5).

A clamp strip 21 is provided, which is adapted to engage along the edgeof the table portion lit and is formed with a plurality of slots oropenings 2'! through which the pins l3 may project. This clamp strip hasa flange portion 21 by which it is attached to a pair of parallel arms28 extending at right angles thereto. Each of these arms issubstantially of inverted U-shape. At their rear ends these arms 28 aresecured to a shaft 29 which is rotatively supported on standards 30.These standards 36 are clamped by screws 3i upon a pair of verticalposts 32 which are mounted on the table portion It From each of thestandards 30 there projects a finger 33, extended over into the path ofpivoting of the arms 28. Each of these'fingers has an adjustment screw3Q adapted to be adjusted to limit the amplitude through which the arm28 lowers ll.

may pivot. Tension springs 35 are secured at one of their ends to lugs36 mounted upon the end of the table portion lll These lugs are arrangedin a vertical line with the shaft 29. The upper end of each of thesprings 35 is attached to a pin 31 mounted on the arm 38.

These pins 3'! are so positioned that normally, with the clamp strip 2'!in its lowered position, as shown in full lines in Figs. 2 and 5, thesprings 35 act to urge the clamp strip downwards. But if the clamp stripis manually moved to pivot the arms 28 anti-clockwise as viewed in Fig.2, the

springs 35 will pass the dead center of a plane.

extended through the axis of the shaft 29 and the lugs 36. Now thesprings 35 will act to hold the arms 38 in their lifted or raisedpositions as shown by the dot and dash lines in Fig. 2.

' In Fig. '7 a modified form of the invention has been disclosed inwhich a means is provided for automatically changing the tension of thesprings 35 when the position of the pin support member 52 is varied.This means includes a lever 39 for each of the followers il Each lever39 is connected by a pintle 40 to one of the fol- Each lever 39 ispivotally supported intermediate of its ends by a bracket 4! which ismounted on the table portion l The outer end of each lever 39 has anupward extending portion 3% and the lower end of the ;spring 35 isconnected to this portion 39 The arrangement is such that when thescrews l8 are turned to move the followers ll and consequently the pinsupport member 52 downwards so as to retract the pins E3, the levers 39will .pivot to 'reduce the tension of the springs 35 and so reduce thedownward pressure of the clamp strip 21. Vice versa, when the screws l8are turned to further extend the pins [3 the levers 39 will pivot toincrease the tension of the springs 35. The front ends of the levers 39are provided with slots 42 in which the pins 48 work so that it ispossible for the followers ll to move in the vertical direction whilethe ends of the levers l9 move in arcuate paths.

The operation of the device is as follows:- When the arms 28are in theirraised positions the clamp strip 2'! will be off the pins l3. The freeend portion of the roll of fabric H is engaged on the pointed end of thepins. The clamp 0 strip 2'? is then moved downwards to engage over thepointed ends of the pins and hold the fabric against coming off. Thesprings 35 will hold the arms 28in either their lowered or raisedpositions. In their lowered positions'resilient pres- ;sure is beingapplied on the cloth portion over the pins it. In their raised positionsthey are arranged and held substantially as shown in Fig. 2 by the setscrews 34. The roll of fabric H is then rolled over the table Ill andhas a portion adjacent the roll that is secured down by the line oftacksIS. The fabric is now made tight and it is possible to cut out thefabric according to patterns to make garments.

While I have illustrated and described the preferred embodiments of myinvention, it is to be understood that I do not limit myself to theprecise constructions herein disclosed and the right is reserved to allchanges and modifications coming within the scope of the invention asdetightening fabricsfor cutting goods for clothing comprising a pair ofposts vertically mounted on a table, collars adjustably mounted on saidposts, a rod turnably mounted between said collars, radial fingers onsaid rods and'having free ends, a clamp strip with slots for projectingpins supported upon the free ends of said radial fingers, a pin supportmember beneath said table and having projecting pins extending throughapertures in the table to the top'thereof, and means for holding saidpin member in various vertical positions, comprising a pair of followersmounted ported upon the free ends of said radial fingers,

a pin support member beneath said table and having projecting pinsextending through apertures in, the table to the top thereof, and meansfor holding said pin member in various vertical positions, comprising apair of followers mounted on said pin member, a pair of rotativelysupported screws threadedly engaging said followers, and means forturning said screws in unison, comprising gears mounted upon the screws,a chain connecting said gears, and a handle for turning one of thegears. g

3. A clamping pin device for smoothing and tightening fabrics forcuttinggoods for clothing, comprising a pin support member beneath a table andhaving projecting pins extending through aperturesin said table to thetop thereof, means for holding said pin support member in variousvertical positions, and a clamp stripwith slots for said projecting pinsmovably supported on the top of said table to clamp down on the tableand over said pins, arms supporting said clamp strip, resilient meansconnected with the clamp strip and urging it downwards over theprojecting pins, and an arrangement whereby when said arms are raisedthe resilient means will act to hold them in their raised position.

4. A clamping pin device for smoothing and tightening fabrics forcutting goods for clothing, comprising a pin support member beneath atable and having projecting pins extending through apertures in saidtable to the top thereof, means for holding said pin support member invarious vertical positions, a clamp strip with slots for said projectingpins movably supported onthe top of said table to clamp down on thetable and over said pins, a pair of parallel arms supporting said clampstrip, each of said arms being of inverted U-shape with the clamp stripmounted on one of the endsthereofla shaft supporting the other of theends of said arms, springs connected between, portions of said arms andsaid table top to urge the arms downwards and when the arms are pivotedto hold the arms upwards, and stops for holding s'aidarms in said raisedpositions.

5QA clamping pin device for smoothing and tightening fabrics for cuttinggoods for clothing, comprising a pin support member beneath a table andhaving projecting pins extending through apertures in said table to thetop thereof, means for holding said pinsupport member in variousvertical positions, a clamp strip with slots for said projecting pinsmovably supported on the top of said table to clamp down on the tableand over 1 said pins, a pair of parallel arms supporting said clampstrip, each of said arms being of inverted Ushape with the clamp stripmounted on one of the ends thereof, a shaft supporting the other of theends of said arms, springs connected between portions of said arms andsaid table top to urge the arms downwards and when the arms are pivotedto hold the arms upwards, and stops for holding said arms in said raisedpositions, each of said springs being connected with a lever pivotallymounted, and means connecting said lever indirectly with said pinsupport so that when the pin support is moved upwards the tension ofsaid springs are increased, and when moved downwards the tension of saidsprings is slackened.

ARMANDO PRATI.

